. >> the problems surrounding the police radios were magnified last july the day president obama appeared at fox theater. a large contingent of police were outside to handle problems that could arise from protestors. many of the officers said they had trouble communicating on their two-way radios. there have been numerous complaints before about the glitches of the new radio system that had been installed the year before. it had been riddled with glitches right from the start. barry donalin heads the police officers association. >> the mic doesn't work for a variety have different reasons. you don't know the time nor the place where it's going to break down. >> this report confirms what an internal city investigation found after a month after the president's visit that cell sites were affecting the public safety radio system, that the signals were bleeding into radio channels causing sporadic interference. as of two months ago, 43 cell sites have been tested. a little over half of them resolved. most were at&t's towers. he says communication may have improved but officers still have no co